TITLE

Cu-doping effects in CdI2 layered nanostructures: The role of photoinduced electron-phonon anharmonic interactions

AUTHOR(S)
Miah, M. Idrish; Kasperczyk, J.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Cu-doping effects in CdI2 layered nanocrystals were studied experimentally. We used a photostimulated second harmonic generation (PSHG) in order to investigate the nanoconfined effects. It was found that the PSHG increased with increasing Cu-doping within a low-density limit. For the higher Cu content the PSHG output signal was decreased to the value observed for the undoped CdI2 crystal. The above results suggest that the Cu-metallic clusters play a crucial role in the processes responsible for the observed nonlinear optical effects. The large enhancement of the PSHG observed in the Cu-doped thin nanocrystals confirms the fact that the Cu-impurities of low concentrations favor stronger local photoinduced anharmonic electron-phonon interactions.
ACCESSION #
36534170

 

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